login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027866 Numbers n such that n^2 + (n+1)^2 + (n+2)^2 + (n+3)^2 + (n+4)^2 + (n+5)^2 is prime. 4
2, 3, 4, 9, 12, 13, 18, 19, 21, 23, 24, 32, 34, 38, 48, 51, 52, 56, 62, 63, 81, 82, 87, 96, 97, 102, 104, 109, 119, 128, 142, 146, 152, 158, 159, 164, 166, 167, 199, 212, 214, 217, 219, 221, 223, 224, 229, 233, 236, 238, 249, 251, 258, 269, 273, 277, 284, 291, 296 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

P. De Geest, World!Of Numbers

MATHEMATICA

Select[ Range[ 6! ], PrimeQ[ #^2+(#+1)^2+(#+2)^2+(#+3)^2+(#+4)^2+(#+5)^2 ]& ] [ From Vladimir Joseph Stephan Orlovsky, Dec 20 2009 ]

PROG

(MAGMA) [n: n in [0..1000] |IsPrime(n^2+(n+1)^2+(n+2)^2+(n+3)^2+(n+4)^2+(n+5)^2)] [From Vincenzo Librandi, Nov 18 2010]

CROSSREFS

Sequence in context: A125774 A062410 A145772 * A100902 A034793 A134313

Adjacent sequences:  A027863 A027864 A027865 * A027867 A027868 A027869

KEYWORD

nonn

AUTHOR

Patrick De Geest

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified June 19 05:40 EDT 2013. Contains 226390 sequences.